Furnace wall construction



Julyl 6, 1943,

L. H. HosBElN FURNACE WALL` CONSTRUCTION Original Filed oct. 18

' struction thereof.

vulatentedlluly 6, 1943 I 2,323,661 y FURNACE WALL CONSTRUCTION Louis H. Hosbein, Glencoe,

Detrick Company, Chicago, lll.,

' wall construction and has more particular reference to refractory'blocksor tiles for the con- The instant application is a division of my co-pending application'Serial No. 300,020, filed October '13, 1939, which has now issued as Patent No. 2,279,515, granted April 14, 1942.

The invention is shown herein as embodied in one of the furnace walls disclosed and described in my co-pending application aforesaid, but it will be understood that this is presented merely for illustrative purposes and is not necessarily restricted thereto, and it will be apparent that the invention may be embodied in various other forms of wall structures having other and more general valuable' application.

A principal object of h e invention is theprovision of a refactory block or tile so formed that but a single 'form of tile is required for the con-V struction of an entire furnace wall,

-Another important object of the invention is the provision .of a relatively thin-refractory tile, which will bey effective to minimize air or gas leakage through the wall.

A further important object of. the invention is the provision of such a refractory block or UNITED 15T-Ares IA'iriala'r.v OFFICE Ill., assignor to M. H. a corporation of October 18, 1939, Serial No. Divided an d this application July 29, 1941, Serial No. 404,551

-ner surfaces (Fig. 3)

type of foundation therefor. The frame members II may be of any suitable shape, horizontal frame members I2 are provided with longitudinally extending recesses I4 in their inand longitudinally extend- I5 and I6 along the upper The ing marginal recesses l and lower edges of their rear surfaces.

recess or channel I4 is positioned a short disv front and rear surfaces I3 and 2I, respectively,

tile-which is simple, inxepensive` and easily and economically manufactured.- Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, when taken in connection with the accompanying drawing, discloses a preferred embodiment thereof. v

Inthe drawing, Figure 1 is a perspective view of the refractory block o'r tile, taken from the top and rear thereof Fig.` 2 is a perspective view of the refracrear thereof and Fig. 3 is a transverse, vertical sectional view' in Figs. 1 and 2. The

- tory Iblock or tile, taken'from the bottom and` `adjacent the rear surface 2I, and the tance below the horizontal center line of each of the frame members I2, and the latter are preferably provided with a plurality of elongated apertures I1 extending therethrough substantially on the center line thereof. The apertures I1 are spaced longitudinally of the members I2 for the purpose of -accommodating the bolts I3 and for another purpose to be later more fully described.

The inner surface of the instant furnace wall (to the right in Fig. 3) comprises a plurality of refractory blocks or tiles, indicated generally by reference numeral I8. Referring more particularlyto Figs. l and 2,'each of the'blocks or tiles I8 is in the shape of a parallelepiped having top and bottom side surfaces 22 and 23, respectively, and right and left end surfaces 24 and 25, respectively; It will be understood that'the refractory tile I8 is being viewed from the rear top surface 22 is provided with a longitudinal groove 26 disposed lower surface 23 is provided with a similar groove whichcomprises three separated portions 21, 28 and 29. The'grooves 21, 28 and 29v are in longitudinal alignment with each other and in vertical alignment with the `groove 26. The rear surface 2l of the tile is cut away at its lower edge as indicated at 3I, 32 and 33 to provide access to the grooves 21, 28 and 29, respectively, from the rear of the block. The upper surface 22 of the tile I3 is provided with a longitudinal seat or shallow groove 34 extending parallel to the groove seat or groove Seat or shallow groove cation therewith along the tile. (Viewing Fig. 2.) The seats or grooves 34 and 35 are appreciably more shallow than the grooves 26 to 29, and are preferably formed with .beveled sides, as seen in Figs. 1 and 2. The right hand end 24 of the tile (to the left in Fig. 1) is provided with a projection or tongue 36 which is in vertical alinement with the groovesA 34, 35 and extends outwardly from the end surface a distance substantially equal to the 35 extending in communiwhile the 26 adjacent the front surface I9. The 34 is in vertical alinement with a the left hand end 25 of depth of the latter grooves. The bottom surface 23 is provided with a similar projection or tongue 31, as shown in Figs. 2 and 3. The projections or tongues 36 and 31 are preferably formed with beveled sides which conform to the beveled sides of said seats or grooves 34 and 35, andare adapted to be received .and seat within said grooves 34, 35, as shown in Fig. 3.

When the refractory tiles -I8 are laid in the manner shown in Fig. 3 to form the inner portion of the wall. the blocks of adjacent horizontally disposed rows are positioned in staggered relationship relative to each other, with the projections or tongues 31 of one row of blocks engaging within the grooves 34 of the blocks of adjacent rows, and the projections or tongues 36 and grooves 35 engaging with the respective grooves and tongues of the adjacent blocks of the same row. With this arrangement, the

joints between the tiles I8 extending from the front to the rear thereof will be in broken lines instead of straight lines to prevent leakage transversely through the wall, and each of the I separate tiles will aid in maintaining the ones adjacent thereto in proper alinement. y

Means are shown for lsectionally supporting the several refractory tiles I8 and for facilitating the erection and removal and replacement thereof from the rear of the wall. Removably mounted upon the several horizontally disposed frame or supporting members I2 are a plurality of main refractory supporting hanger members, indicated generally by reference numeral lli. As will be seen in Fig. 3, each of the hanger members 6I comprises a main body portion which is disposed transversely o f the wall and terminates at the rear adjacent the upper end thereof in a downwardly extending hook member 82. The `rear edge of the-.hanger member 6I is cutaway at 43 adjacent and extending below the hook 42, and terminates at its lowerend in a rearwardly extending pad 44. With such configuration, the hanger member 4I is adapted to be removably mounted upon a horizontal frame member I2 with the hook' 42 engaging within the upper channel or groove I5, the cut-away portion 43 providing clearance for the upper' part of the frame member I2, and the pad 44 resting against the forward surface of the frame members. At its forward end, the hanger member 4I is provided With a forwardly extending ange 45 which terminatesin upwardly extending, longitudinally spaced lugs ,46. As more particularly disclosed',

in-my co-pending application, hereinbefore referred to, Aeach of the hanger members 4I is adapted to support a plurality of refractory tiles I8, eight in number for example, although engaging only the lowermost one of this group of tiles. Such engagement is had only between the cut-away portion 32 of the tile and the flange 45 of the hanger member, and between the lugs 48 and'the groove 28 (Fig. 3), if the hanger 4I is positioned to engage the central part of the lowermost tile I8. It is preferred, however, that the end portions of two adjacent tiles in the same row be engaged and supported by the hanger 4i, as shown in the drawing. When the tiles are so laid, engagement is had only between the'flange 45 of the hanger member 4I and the end cutaway portions 3I, 33 of adjacent tiles, and between the lugs 45 and the end grooves 21, 28. The flange 45 thus functions to provide the necessary vertical support for the associated group of refractory tiles I8, the weight oi'A the latter being transmitted to the associated horizontal Aframe member I2 by the hook 42 and pad 44 of the hanger 4I.

Means are provided. as more particularly described in said co-pending application, for retaining the remaining tiles I8 of the group or section supported by the hanger 4I in proper vertical alinement to prevent inward bulging of the wall. An auxiliary hanger member,indicated generally by reference numeral 5l, is provided for each section of refractories I8 supported by a hanger member 4|. a Each of the auxiliary hanger members 5I comprises an elongated channel member having a pair of outwardly extending, parallel flanges 53, and a hook member 54 extending upwardly therefrom and formed integrally therewith. The upper and lower ends of the body portion 52 terminate in transversely spaced, forwardly extending pads 55.` I

An auxiliary hanger member 5I is removably mounted upon a horizontal frame member I2 in vertical alinement with each of the main hanger members 4I. The upper end of the hook member 58 of the auxiliary hanger 5I engages within the groove I4 in the forward surface of the horizontal frame member I2, with the upper pair of pads 55 being disposed within the lower marginal groove I6 in the rear surface of the frame member. The lower pair of pads 55 engages within the upper marginal groove I5 of the next'lower horizontal frame member I2 and on either side of the hook 42 of the next lower main hanger member 4I. A plurality of cross pieces 56 are flanges 53 of the auxiliary hanger member 5I and disposed in suitable recesses provided in the are rigidly secured thereto in any desired manner. The cross pieces 56 are vertically spaced from each other a distance equal to twice the height of the refractory tiles I8.

A horizontally disposed retaining member, indicated generally by reference numeral 6I,v is adapted to be mounted upon each of the cross pieces. Each of the retaining members 6I (Fig. 3) terminates at its rear end in a downwardlyextending ange portion 62 which engages behind the associated cross piece 56, the main body portion of the retaining member 6I extending between the anges 53 of the auxiliary hanger member 5|. The forward end of the retaining member 6I comprises a horizontally disposed shelf 63 which terminates at its outer end in spaced, vertically disposed flanges 64 extending above and below the shelf 63. 'I'he retaining member 6I is of such length that the rear surfaces of the flanges 64 will engage' the rear Isurfaces of the grooves 26 and 28 in the associated refractory tiles I8, when properly mounted as shown in Fig. 3, to prevent forward bulging of the wall. Since the upper anges 64 will engagev the central groove 28 in the lower surface of one tile I 8 and Vthe lower-flanges 64 will engage the end portions of the grooves 28 in the upper surfaces of the two tiles in the next lower row, it is not essential to have a retaining member 6I disposed between the next two lower rows of refractories. In other words, it is only necessary to employ retaining members in the joints between vevery other ro'w of tiles. as shown in said coupper one associated with the auxiliary hanger member I is disposed between the two upperv tiles cfa particular section or group. With an even number of tiles in each vertically disposed section or group, the lower retaining member 6I associated therewith will be disposed between the two lower tiles o! the section, as shown at the held against forward transverse movement by the main hanger member 4|. This is accomplished by providing a rearwardly extending shoulder 65 at the upper end of the main hanger l lmember 4I (Fig. 3).

The shoulder 65 is disposed in vertical alinement withthe cross pieces 56, and the rear flange 62 of the associated member 6I engages this shoulder in the same manner as the other members 6I engage the cross pieces 66.

This arrangement has the additionaladvantage of enabling two upper rows of tiles I8 to-be added to the top of the wall with the use of only one member 4I and one member 6I per section or group of tiles, while eliminating the necessity of employing an additional auxiliary hanger member 5I. The wall may thus be built up above the top horizontal frame or supporting member I2 so as to afford complete protection for the latter. In order to provide for vertical expansion of lthe wall, a suitable high temperature resistant material is interposed between the lower.

tiles of each section or group and the upper tiles of the next lower section, to provide an expansion joint 66 (Fig. 3). This material will completely i111 the adjacent grooves in the tiles and entirely` cover the forward end of the main hanger members t I. i

After all of the refractory tiles IB have been laid to provide the inner portion of the wall, in themanner above described, the space between the rear surfaces 2| of the tile and the forward surfaces of the horizontal frame members I2 is substantially filled with blocks of any suitable heat resistant or insulation material. 'Ihe spaces between the insulation blocks and all spaces extending rearwardly from the front surfaces of the horizontal frame members I2 and the auxiliary hanger members 5I are then lled with a suitable plastic insulation material 68.

A pluraity of vertically extending plates are then mounted at the rear of the wall to provide an outer casing therefor. substantialy the same width as the insulation blocks. In order to rigidly retain the casing plates in position, the auxiliary hang-er members 5I are provided with a plurality of vertically spaced, vrectangular apertures 'il centrally disposed in the main body portion 52 thereof, and a bolt 12 is adapted to be inserted into each of the apertures 1I from the rear of the wall.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description. and it will be faces, one of said side faces having aH plurality of recesses therein communicating with said rear face, said recesses being arranged in spaced relation and extending substantially parallel with said 'rear face, each of said recesses communicating with a groove spaced from said rear face, the opposite side face having a groove therein extending along said face adjacent to and parallel with "said rear face and in' line with said first mentioned groove, said grooves being capable of interlocking' cooperation with supporting or retaining members.

2. A tile for furnace construction, comprising a refractory block having oppositely disposed front and rear faces and oppositely disposed side faces and oppositely disposed end faces one of/ said side faces having apluralityof recesses therein The plates may be of apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the inventionor sacrincing all of its material advantages, the form hereinbefore described be- 'ing merely a preferred embodiment thereof.

- Iclaim:

l. A tile for furnace construction, comprising a refractory block having oppositely disposed front and rear faces and oppositely disposed side communicating with said rear face, said recesses being arranged in spaced relation and extending substantially parallel with said rear face, eachof said recesses communicating with a groove spaced from said rear face, the recesses at each end 0f the block communicating respectively with said end faces, the oppositey side face having a longitudinally extendinng groove therein in line with said first mentioned groove, said grooves being capable of interlocking cooperation with supy porting or retaining members.v

3. A 4tile for furnace construction, comprising a refractory block having oppositely disposedl front and rear faces and oppositely disposed side faces, one of said side faces having-a plurality of recesses therein communicating with said rear face, said recesses being arranged in spaced relation and extending substantially parallel with said rear face, said side face having cut-away portions extending inwardly of said recesses to form extensions thereof, said cut-away portions being spaced from the rear face of said block, the opposite side face having a groove therein extending along said face adjacent to andy parallel with said rearface and in line with said cut-away. portions, said cut-away portions and said groove being capable of interlocking cooperation with supporting or retaining members.

4. A tile for furnace construction, comprising a' refractory block substantially parallelepiped in form and having oppositely disposed front andy rear faces and oppositely disposed side faces and oppositely disposed end faces, one of said side faces having a plurality of recesses therein coma refractory block substantially parallelepipedin form andhaving oppositely disposed iront and rear faces, oppositely disposed side lfaces, and oppositely ydisposed end faces, 'one of said side faces havingla plurality of recesses therein communicating with said rear face and arranged in spaced ,formation extending substantially parellel with said rear face, the end recesses of such formation communicating respectively with .said

end faces, each of said recesses communicating with a groove spaced from said rear face, said groove being capable of interlocking cooperation with a supporting or retaining member, and

tongue-and-groove means circumscribing said block around its side and end faces and disposed between said recesses and said front face.

6. A tile for furnace construction, comprising a refractory block substantially parallelepiped in form and having oppositely disposed front and rear faces, oppositely disposed side faces, and oppositely disposed end faces, one of said side faces having a plurality of recesses therein communicating with said rear face and arranged in spaced formation extending substantially parallel with said rear face, the end recesses of such formation communicating respectively with said end faces, each of said recesses communicating with a groove spaced from said rear face, said groove being capable of interlocking cooperation with a supporting or retaining member, and tongue-and-groove means circumscribing said block around its side and end faces and disposed between said recesses and said front face, the opposite side face having a groove therein clisposed adjacent to and parallel with said rear face.

7. A tile for furnace construction, comprising a refractory block substantially parallelepiped in form and having oppositely disposed front and rear faces, oppositely disposed side faces, and oppositely disposed end faces, one of said side faces having a plurality of recesses therein communicating with said rear face and arranged in spaced formation extending'substantially parallel with said rear face, the end recesses of such formation communicating respectively with said end faces, each of said recesses communicating with a groove spaced from said rear face, said groove being capable of interlocking cooperation with a supporting or retaining member, and tongue-and-groove means circumscribing said block around its side and end faces and disposed between said recesses and said front face, said tongue-and-groove means comprising a groove in one of said side faces and a tongue upon the opposite side face, and a groove in one of the erd faces and a tongue upon the opposite end face.

8. A tile for furnace construction, comprising a refractory block substantially parallelepiped in form and having oppositely disposed front and rear faces, oppositely disposed side faces, and oppositely disposed end faces, one of said side faces having a plurality of recesses therein communicating with said rear face and arranged in spaced formation extending substantially parallel with said rear face, the end recesses of such formation communicating respectively with said end faces, each of said recesses communicating with a groove spaced from said rear face, said groove being capable of interlocking cooperation with a supporting or retaining member, and tongue-and-groove means circumscribing said block around its side and end faces and disposed between said recesses and said front face, said tongue-andgroove means comprising a groove in one of said side faces and a tongue upon the opposite side face, and a groove in one of the end faces and a tongue upon the opposite end face, and the opposite side face having a groove therein traversing it and disposed adjacent to and parallel with said rear face.

9. A tile for furnace construction, comprising a refractory block substantially parallelepiped in form and having oppositely disposed front and rear faces, oppositely disposed side faces, and oppositely disposed end faces, one of said side faces having three recesses therein communicating with said rear face, one of said recesses being centrally disposed with respect to the others, and said other recesses communicating respectively with said end faces, each of said recesses communicating with a groove spaced from said rear face, and the opposite side face having a -longitudinally extending groove therein, said grooves being capable of interlocking cooperation with supporting or retaining members.

LOUIS H. HOSBEIN. 

